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Finding the Fourth Proportional to 16,420.80, 24,580.29 and 13,274.55

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Solution

The fourth proportional to 16,420.80, 24,580.29 and 13,274.55 is: 19,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.80 : 24,580.29 = 13,274.55 : x
  2. Step 2: Convert to fraction form
    16,420.80/24,580.29 = 13,274.55/x
  3. Step 3: Cross multiply
    16,420.80x = 24,580.29 × 13,274.55
  4. Step 4: Simplify right side
    16,420.80x = 326,292,288.62
  5. Step 5: Solve for x
    x = 326,292,288.62/16,420.80
  6. Step 6: Final answer
    x = 19,870.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.